Follow-up re temp flipper: should it resemble my teeth in size and angle? How to convince dentist to resolve? (Photo)

since my post, have seen the dentist. He said I am speaking just fine and there is no way to correct the whistling. Also just as I expected, reminded me the flipper is temporary and added that it the teeth were made on an angle like mine were, my lip would be sticking way out.,and that flipper teeth are always short, to make them longer, they would break.I dont want to look ugly , even for a day, let alone 3-5 months. I have attached photos. Please hel with your feedback.